Joined: Sep 2007
Posts: 1554
I am also wondering if they could be terns. Do they have a black head?
I know these showed up about this time years ago. They stopped by to eat all of the tent caterpillar moths. They loved swooping over the trees especially. Because of this, they were a welcome sight and I am grateful for their presence!
I wonder if they could be eating hornets and the like too. They have been plentiful this year. Anyone have any observations about possible attractants that you won't miss?